Abstract

早在2014年,我们设计合成了一类结构独特的螺环稠合六元环-氮杂卡宾配体(SNHC),并初步证明了其比一般的咪唑型五元环氮杂卡宾具有更强的亲核能力和配位能力。在温和条件下,SNHC配体与Ir(I)发生快捷的氧化还原配位,生成了含有两个Ir-C共价键的Ir(III)钳形有机金属氢化物SNIr-H,产率高达91%。该类配合物在催化C-H活化/C-Si、C-C键形成反应中具有较高的活性和区域选择性,因此有必要合成制备更多的类似物和衍生物,进一步拓宽、深化其催化性质研究。本文将通过扩展配体类型和Ir-C共价键的杂化模式,进一步转化和衍生该类金属有机配合物。这些化合物为开发新的金属有机试剂、新的催化反应性质提供了物质基础。

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